US4388159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface preparation of aluminum articles
Assignee: LONG MANUFACTURING Ltd A CORP OF CANADA
•
Filing: 1981-05-18
•
Granted: 1983-06-14
•
Expires: 2001-05-18
Abstract
Abstract The surfaces of aluminum and aluminum alloy articles, when abraded with a low-density abrasive product in the presence of a lower alcohol such as isopropanol, are readily plated or coated to provide a uniform plating or coating. The process is particularly useful in providing aluminum-silicon brazing alloy with nickel or nickel-lead plating for brazing.
Inventors
- 👤 Kostas F. Dockus
- 👤 William D. Sproul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:52
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0233; B23K35/0238; B23K35/22; B23K35/24; B23K35/28; B23K35/286
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
A process for providing the surface of an aluminum-silicon brazing alloy sheet with a bond-promoting metallic plating comprising the steps of abrading said surface with a low-density abrasive product comprising a plurality of flexible, tough fiberous members intertwined and bonded together and having abrasive granules randomly distributed throughout and bonded thereto, in the presence of a solvent selected from the group consisting of C 1 -C 4 alcohols, then depositing on said surface said metallic plating selected from the group consisting of nickel, nickel-lead alloy, cobalt, cobalt-lead alloy and a combination thereof.
Claim 2
Dependent Claim
92 words
A process for providing the surface of an aluminum-silicon brazing alloy sheet with a bond-promoting metallic plating comprising the steps of abrading said surface with a low-density abrasive product comprising a plurality of flexible, tough fiberous members intertwined and bonded together and having abrasive granules randomly distributed throughout and bonded thereto, in the presence of a solvent selected from the group consisting of C 1 -C 4 alcohols, then depositing on said surface said metallic plating selected from the group consisting of nickel, nickel-lead alloy, cobalt, cobalt-lead alloy and a combination thereof.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein said solvent is isopropanol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |